diff --git a/addons/mass_mailing/models/mailing.py b/addons/mass_mailing/models/mailing.py
index 7646a0b0e12..f25f7b138b0 100644
--- a/addons/mass_mailing/models/mailing.py
+++ b/addons/mass_mailing/models/mailing.py
@@ -77,9 +77,9 @@ class MassMailing(models.Model):
             return False
 
     active = fields.Boolean(default=True, tracking=True)
-    subject = fields.Char('Subject', help='Subject of your Mailing', required=True, translate=True)
+    subject = fields.Char('Subject', help='Subject of your Mailing', required=True, translate=False)
     preview = fields.Char(
-        'Preview', translate=True,
+        'Preview', translate=False,
         help='Catchy preview sentence that encourages recipients to open this email.\n'
              'In most inboxes, this is displayed next to the subject.\n'
              'Keep it empty if you prefer the first characters of your email content to appear instead.')